Commit 2c247c51 authored by Christoph Hellwig's avatar Christoph Hellwig Committed by Jens Axboe
Browse files

md: use set_capacity_and_notify 



Use set_capacity_and_notify to set the size of both the disk and block
device.  This also gets the uevent notifications for the resize for free.

Signed-off-by: default avatarChristoph Hellwig <hch@lst.de>
Acked-by: default avatarSong Liu <song@kernel.org>
Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
parent dc2985a8

drivers/md/md-cluster.c

+2 −4
Original line number Diff line number Diff line
@@ -581,8 +581,7 @@ static int process_recvd_msg(struct mddev *mddev, struct cluster_msg *msg) 
		process_metadata_update(mddev, msg);

		break;

	case CHANGE_CAPACITY:

		set_capacity(mddev->gendisk, mddev->array_sectors);

		revalidate_disk_size(mddev->gendisk, true);

		set_capacity_and_notify(mddev->gendisk, mddev->array_sectors);

		break;

	case RESYNCING:

		set_bit(MD_RESYNCING_REMOTE, &mddev->recovery);
@@ -1296,8 +1295,7 @@ static void update_size(struct mddev *mddev, sector_t old_dev_sectors) 
		if (ret)

			pr_err("%s:%d: failed to send CHANGE_CAPACITY msg\n",

			       __func__, __LINE__);

		set_capacity(mddev->gendisk, mddev->array_sectors);

		revalidate_disk_size(mddev->gendisk, true);

		set_capacity_and_notify(mddev->gendisk, mddev->array_sectors);

	} else {

		/* revert to previous sectors */

		ret = mddev->pers->resize(mddev, old_dev_sectors);

drivers/md/md-linear.c

+1 −2
Original line number Diff line number Diff line
@@ -200,9 +200,8 @@ static int linear_add(struct mddev *mddev, struct md_rdev *rdev) 
		"copied raid_disks doesn't match mddev->raid_disks");

	rcu_assign_pointer(mddev->private, newconf);

	md_set_array_sectors(mddev, linear_size(mddev, 0, 0));

	set_capacity(mddev->gendisk, mddev->array_sectors);

	set_capacity_and_notify(mddev->gendisk, mddev->array_sectors);

	mddev_resume(mddev);

	revalidate_disk_size(mddev->gendisk, true);

	kfree_rcu(oldconf, rcu);

	return 0;

}

drivers/md/md.c

+10 −14
Original line number Diff line number Diff line
@@ -5355,10 +5355,9 @@ array_size_store(struct mddev *mddev, const char *buf, size_t len) 


	if (!err) {

		mddev->array_sectors = sectors;

		if (mddev->pers) {

			set_capacity(mddev->gendisk, mddev->array_sectors);

			revalidate_disk_size(mddev->gendisk, true);

		}

		if (mddev->pers)

			set_capacity_and_notify(mddev->gendisk,

						mddev->array_sectors);

	}

	mddev_unlock(mddev);

	return err ?: len;
@@ -6108,8 +6107,7 @@ int do_md_run(struct mddev *mddev) 
	md_wakeup_thread(mddev->thread);

	md_wakeup_thread(mddev->sync_thread); /* possibly kick off a reshape */



	set_capacity(mddev->gendisk, mddev->array_sectors);

	revalidate_disk_size(mddev->gendisk, true);

	set_capacity_and_notify(mddev->gendisk, mddev->array_sectors);

	clear_bit(MD_NOT_READY, &mddev->flags);

	mddev->changed = 1;

	kobject_uevent(&disk_to_dev(mddev->gendisk)->kobj, KOBJ_CHANGE);
@@ -6424,10 +6422,9 @@ static int do_md_stop(struct mddev *mddev, int mode, 
			if (rdev->raid_disk >= 0)

				sysfs_unlink_rdev(mddev, rdev);



		set_capacity(disk, 0);

		set_capacity_and_notify(disk, 0);

		mutex_unlock(&mddev->open_mutex);

		mddev->changed = 1;

		revalidate_disk_size(disk, true);



		if (mddev->ro)

			mddev->ro = 0;
@@ -7258,8 +7255,8 @@ static int update_size(struct mddev *mddev, sector_t num_sectors) 
		if (mddev_is_clustered(mddev))

			md_cluster_ops->update_size(mddev, old_dev_sectors);

		else if (mddev->queue) {

			set_capacity(mddev->gendisk, mddev->array_sectors);

			revalidate_disk_size(mddev->gendisk, true);

			set_capacity_and_notify(mddev->gendisk,

						mddev->array_sectors);

		}

	}

	return rv;
@@ -9036,10 +9033,9 @@ void md_do_sync(struct md_thread *thread) 
		mddev_lock_nointr(mddev);

		md_set_array_sectors(mddev, mddev->pers->size(mddev, 0, 0));

		mddev_unlock(mddev);

		if (!mddev_is_clustered(mddev)) {

			set_capacity(mddev->gendisk, mddev->array_sectors);

			revalidate_disk_size(mddev->gendisk, true);

		}

		if (!mddev_is_clustered(mddev))

			set_capacity_and_notify(mddev->gendisk,

						mddev->array_sectors);

	}



	spin_lock(&mddev->lock);

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